the other one instead of using magnetic fields you can use actually a 12 volt battery over the head and that also can actually increase excitable of motor cortex. these are two ways to augment activity and plasticity over targeted areas of the brain and a lot of studies are showing that these can increase and improve performance. so the dream would be the cocktail would be to take a patient early after stroke, in this window of plasticity, put them, hook them up to a robot and stimulate their brain at the same time. and potentially give them some sort of drug and with this cocktail, ramp up the amount of recovery that could occur in these patients early after stroke. >> let me go back. this notion of where you see the future of the kind of research you are doing with the deep brain stimulation. >> as you know, deep brain stimulation is now being exported if you will from the parkinson's tremor field so other movement disorders it has been successfully for distonya and other disorders characterized by excessive movement. but more strikingly, and i think remarkably for disorders, that rea